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Sophie [7]
2 years ago
15

Help to solve give brainliest

Mathematics
1 answer:
Nitella [24]2 years ago
5 0

Answer:

<h2>(B) 32</h2>

Step-by-step explanation:

equation of The line L : y = -(1/2)x + 6

A(8 , b) ∈ L  then b = -(1/2)(8) +6 then b = -4 + 6 = 2

Therefore ,

A(8 , 2)

AB = 2

CD = 6

BC = 8

…………………………………………

Area of the trapezoid ABCD

= (CB÷2)×(AB + CD)

= (8÷2)×(6+2)

= 32

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The balloon uses 4.5 quarts of gas in 7 minutes. How many gallons will it use per hour?
antoniya [11.8K]

Answer:

≈9.64 gallons

Step-by-step explanation:

To solve, we can figure out how many quarts are in a minute and use that to figure out how many quarts are in an hour. Then, we can convert quarts to gallons.

4.5 quarts = 7 minutes

First, we can find how many quarts equal 1 minute. To do this, we can divide both sides by 7 because anything divided by itself equals 1

4.5/7 quarts = 1 minute

Next, we want to figure out how many quarts go into 60 minutes, or 1 hour. To do this, we can multiply both sides by 60 because 1 * 60 = 60

4.5 * 60 / 7 quarts = 60 minutes = 1 hour

We now know how many quarts are in an hour, so we can now convert quarts to gallons

4 quarts = 1 gallon

divide both sides by 4

1 quart = 1/4 gallons

To get from quarts to gallons, we can divide by 4, so we have

(4.5 * 60 / 7)/4 = 4.5 * 60 / 28

≈9.64 gallons

4 0
3 years ago
Help! I really need help with this! I’m SO confused!
Y_Kistochka [10]

Hi I am learning this too.  Okay so first is there any type of picture that shows if angles ABC are congruent to angles CDA.  If there is i'll be able to help you.  

7 0
3 years ago
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ddd [48]
I think it is because if you divide by a negative you which the sign ?

7 0
3 years ago
Need help with these problems and I have to show my work
Rasek [7]

Answer:

1. 20 min and 15 sec

2. 4 min and 30 sec

3. y=80x-20

4. the second one

Step-by-step explanation:

1.  in 2 min you have 25 g

in 15 sec you loose 2.5 g

2. in 4 min you have 5 g

in 30 sec you loose 5 g

3. y=45x-10

   y=80x-20

4. it takes 2 min and 15 sec to empty the first one and 3 min to empty the second one.

8 0
3 years ago
A boat goes 24 miles at a constant speed in 4 hours against a river current.
Ne4ueva [31]

Answer:

8 miles per hour.

Step-by-step explanation:

24miles in 4 hours = 24/4=6 miles per hour.

24 miles in 3 hours = 24/3=8 miles per hour. The boat going with the current of the river is traveling at 8 miles per hour.

7 0
3 years ago
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